Microstructure and Texture Formation During Near Conventional Forging of an Intermetallic Ti-45Al-5Nb Alloy

Abstract

Texture formation was studied in an intermetallic Ti-45at%Al-5at%Nb alloy after uniaxial compression and near conventional forging. Depending on the deformation conditions the texture of the -TiAl phase is formed by pure deformation components, components related to dynamic recrystallization, or transformation components. This changing corresponds with microstructural observations. The 2-Ti3Al and the -Ti(Al) phase show a similar texture as it is known for Ti and Ti-base alloys after compressive deformation at elevated temperatures. In contrast to the texture, no significant change of the /2 texture was observed in the temperature range between 800 °C and just below the -transus temperature (T = 1295 °C).